Nanometric lead molybdate was prepared using lead nitrate and an aqueous suspension of nanoparticulate (190 nm) molybdenum trioxide and by varying the concentration of the reactants. At intermediate concentrations, less precipitate was formed in favor of formation of a stable suspension of nanoparticles (48 nm) that displayed a very strong Tyndall effect. At high dilution, particles that resembled German crosses were produced.

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Molybdenum hydrogen bronze, H0.57MoO3, is capable of removing up to 80 mequiv./g chromate from aqueous solution. The redox process is accompanied by adsorption of the reduced chromium species so that the chromium is completely removed from solution. Chromate removal was only weakly dependent on pH, being slightly favored at acidic pH. The kinetics appear to involve the rapid adsorption of chromate in an equilibrium process that is followed by reduction of the chromium(VI). The rate constant was found to be first order in chromate and the amount of suspended H0.57MoO3 with a rate constant of 1.40 L g−1 min−1.